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Firedrill with SRDF issues

szhao
Level 2

Hello,

 

I am running some testing for VCS 5.0 with some EMC gear, namely the Symmetrix and SRDF. One feature that was interesting was the global cluster firedrill.

 

I created a silly test app that just writes a file every few seconds onto a Sym-device-mounted directory which is replicated using SRDF/S to the remote site. The application service group looks something like this:

testapp -> mount-point -> SRDF

 

Everything's set up fine in that failing over and whatnot works. I have synchronized BCV devices and is ready to set up a firedrill. When I try hawizard firedrill, The GUI pops up, but won't let me proceed when I try to select the application service group - "This wizard must be run at target site". But I am on the target site! In fact, I get this no matter which ever side I'm on.

 

Next, I try fdsetup-srdf. This gets far enough that it proceeds to start creating the firedrill group, but:

Creating firedrill group
 # /opt/VRTSvcs/bin/hagrp -add testapp2site_fd
 # /opt/VRTSvcs/bin/hagrp -modify testapp2site_fd Parallel 0
 # /opt/VRTSvcs/bin/hagrp -modify testapp2site_fd SystemList licod207   0
 # /opt/VRTSvcs/bin/hagrp -modify testapp2site_fd AutoFailOver 0
 # /opt/VRTSvcs/bin/hagrp -link testapp2site_fd testapp2site offline local
 # /opt/VRTSvcs/bin/hares -add SRDFSnap-SRDF SRDFSnap testapp2site_fd >/dev/null
 # /opt/VRTSvcs/bin/hares -modify SRDFSnap-SRDF TargetResName SRDF
 # /opt/VRTSvcs/bin/hares -modify SRDFSnap-SRDF IsCompositeGroup 1
 # /opt/VRTSvcs/bin/hares -modify SRDFSnap-SRDF MountSnapshot 1
 # /opt/VRTSvcs/bin/hares -modify SRDFSnap-SRDF UseSnapshot 1
 # /opt/VRTSvcs/bin/hares -modify SRDFSnap-SRDF RequireSnapshot 1
 # /opt/VRTSvcs/bin/hagrp -enableresources testapp2site_fd
 # /opt/VRTSvcs/bin/hagrp -modify testapp2site_fd UserStrGlobal FD:testapp2site
 # /opt/VRTSvcs/bin/hares -link mount-2site_fd SRDFSnap-SRDF
/opt/VRTSvcs/bin/hares -link mount-2site_fd SRDFSnap-SRDF
command failed:
        VCS WARNING V-16-1-10240 Attempt to modify non-existent resource
        return code 1
Please correct error and run wizard again

 

It looks like only the SRDFSnap-SRDF resource is created. It tries to modify mount-2site_fd before a corresponding hares -add command.

 

I am fairly unfamiliar with VCS, so I'm having a hard time troubleshooting this. Does anyone have any ideas?

Thanks!!

5 REPLIES 5

szhao
Level 2
On an unrelated topic: Is there currently a SRDF/Star firedrill agent? Thanks!

agawali
Level 2

Hi,

 

fdsetup-srdf script is expecting a Diskgroup resource in between Mount (mount-2site_fd) & SRDFSnap (SRDFSnap-SRDF) resources. You should add a diskgroup resource in the original testapp (in between mount-point & SRDF resource) & run the fdsetup-srdf again.

 

Thanks,
Ashish Gawali

VCS Engg

szhao
Level 2
Thanks for the info. Is this true even when using Silver and Bronze fire drills? I have the same issue when trying those as well.

agawali
Level 2
Yes.

H__Shannon
Level 3

Fire Drill is not currently supported in the VCS SRDF/Star agent.

 

Regards,

Hugh